User Contributed Notes 8 notes

This code is an example. By using classes like this, you gives a chance to create classes which extends another class but have most of the ability what a class extends ArrayObject (like multiple inheritance):

I have to correct my implementation from before. The example before only supported correct read-access but failed on setting new values after creation of the ArrayMultiObject. Also i had to correct a bug that occured from my CopyPasteChange into the comment textarea.

This snippet now hopefully implements a fully functional multidimensional array, represented by an ArrayObject:

There is a RecursiveFilterIterator that makes the above code much easier. And then ther is ParentIterator thta is already a filtering recursive iterator that only accepts elements that have children, with a RecursiveDirectoryIterator as inner iterator you would obviously get only the directories. Further more it ensures that it creates the correct children. All in all you simply need to do this:

Something to note that, at least to me, seems pretty important and is not entirely clear in the documentation is the fact that the ArrayObject class supports get/set on uni-dimensional keys and get ONLY on *passed* multi-dimensional keys/paths (see source below). If you, like me, need to support array accesss overloading for multi-dimensional data, you will need to derive from ArrayObject and overide the ArrayAccess interface methods to "walk" passed data and convert embedded arrays to objects of some kind...

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Note from the extension author:
Actually there is RecursiveArrayObject and RecursiveArrayIterator to deal with recursive structures. However this does not always solve all multidimensional issues as expected.